The airworthiness certification of civil aircraft is very important. The civil aircraft without the airworthiness certification can not be put into service.

民用飞机的适航认证是非常重要的，没有得到适航许可的民用飞机不能投入使用。

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Although there is a bilateral airworthiness agreement, CAAC will still retain its rights to conduct a certification directly on certain items of the manufacturers who will export products.

尽管有双边适航协定，民航总局保留直接对出口产品的生产商的某些项目进行审定的权利。

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The components have already been developed and are currently going through the airworthiness qualification and certification process.

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He added that aviation regulators will have to put the 787 through another airworthiness certification process, which itself could become a complicated and lengthy process depending on the final cause of the problem.

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The fear is that any such move could end up being a lengthy one, depending on how serious the problem is, and may also require the 787 to go through a fresh airworthiness certification process.

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